Space Weather Message Code: WARK04 Serial Number: 3619 Issue Time: 2019 Apr 10 1804 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2019 Apr 10 1800 UTC Valid To: 2019 Apr 11 0600 UTC Warning Condition: Onset NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude. Induced Currents – Weak power grid fluctuations can occur. Aurora

Space Weather Message Code: ALTK04 Serial Number: 2110 Issue Time: 2019 Apr 10 0302 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2019 Apr 10 0259 UTC Synoptic Period: 0000-0300 UTC Active Warning: Yes NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude. Induced Currents – Weak power grid fluctuations can occur. Aurora – Aurora may be

Space Weather Message Code: WARK04 Serial Number: 3619 Issue Time: 2019 Apr 10 1804 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2019 Apr 10 1800 UTC Valid To: 2019 Apr 11 0600 UTC Warning Condition: Onset NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude. Induced Currents – Weak power grid fluctuations can occur. Aurora

Space Weather Message Code: ALTK04 Serial Number: 2110 Issue Time: 2019 Apr 10 0302 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2019 Apr 10 0259 UTC Synoptic Period: 0000-0300 UTC Active Warning: Yes NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude. Induced Currents – Weak power grid fluctuations can occur. Aurora – Aurora may be

Space Weather Message Code: WARK04 Serial Number: 3618 Issue Time: 2019 Apr 10 0233 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2019 Apr 10 0234 UTC Valid To: 2019 Apr 10 0900 UTC Warning Condition: Onset NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude. Induced Currents – Weak power grid fluctuations can occur. Aurora

Space Weather Message Code: ALTK04 Serial Number: 2109 Issue Time: 2019 Apr 09 0245 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2019 Apr 09 0240 UTC Synoptic Period: 0000-0300 UTC Active Warning: Yes NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude. Induced Currents – Weak power grid fluctuations can occur. Aurora – Aurora may be

Space Weather Message Code: WARK04 Serial Number: 3617 Issue Time: 2019 Apr 09 0234 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2019 Apr 09 0234 UTC Valid To: 2019 Apr 09 1200 UTC Warning Condition: Onset NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude. Induced Currents – Weak power grid fluctuations can occur. Aurora

Space Weather Message Code: WARK04 Serial Number: 3616 Issue Time: 2019 Apr 08 1351 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2019 Apr 08 1350 UTC Valid To: 2019 Apr 08 2359 UTC Warning Condition: Onset NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude. Induced Currents – Weak power grid fluctuations can occur. Aurora

Space Weather Message Code: ALTK04 Serial Number: 2108 Issue Time: 2019 Apr 08 0600 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2019 Apr 08 0559 UTC Synoptic Period: 0300-0600 UTC Active Warning: Yes NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude. Induced Currents – Weak power grid fluctuations can occur. Aurora – Aurora may be

Space Weather Message Code: WARK04 Serial Number: 3615 Issue Time: 2019 Apr 08 0438 UTC WARNING: Geomagnetic K-index of 4 expected Valid From: 2019 Apr 08 0440 UTC Valid To: 2019 Apr 08 1200 UTC Warning Condition: Onset NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude. Induced Currents – Weak power grid fluctuations can occur. Aurora